This is really last minute, and likely no one is in any position to go (I work just a little too late to make it feasibly >_<)
http://takuming.seesaa.net/article/197518277.html According to the above, Saitou will be at Sangenjaya Station in Tokyo with Fukushi Seiji and Namioka Kazuki tomorrow from 4-7 PM to raise money for quake/tsunami victims.
Seems a very "Saitou" thing to do :)